Realplayer - sound ist "scrambled"

Ok, here's the deal. I'm running Mandrake 8.1 on a x86 system with KDE 2.2.

Yesterday I installed (and downloaded) the Realplayer 8 basic from real.com. Of course I choosed the RPM files.
Installation completed w/o any errors.

But the sound is totatly off. E.g. when you want to listen to a media stram on a website, it sound like it's slow(?) and you don't understand a word. The speakers are just making sorta cracking noises.

Any ideas????

best regards
Sheriff

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